Wheel-harrow



5 m R z .LSGHBAPFER WHEEL HARROW.`

(No Mqdel.)

' fifi d ./Zze/S Jfq UNITED STATES PATENT Qrricaq ANDREV SCHEAFFER, OF DETROIT, MICHIGAN.

W-HEEL-HARROW.

lSPECIFICATION forming part of Letters 'Patent No. 292,955, dated February 5, 1884.

u Application filed August l, 1SS3. (No model.)

To all whom it may concern:

Be it known that I, ANDREW Soi-mannen, of Detroit, in the county of Wayne and State of Michigan, have invented new and useful Improvements in 4Harrows; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, which forni a part of this specication.

This invention relates to certain new and useful improvements in two-wheeled harrows, and the novelty consists in the peculiar construction-and arrangement of parts, as will be more fully hereinafter set forth, andv specifically pointed out in the claims.

Figure l is a plan view of my improved machine. Fig. 2 is a perspective view of the main and supplemental frame with traction-wheels and harrow-teeth removed. Fig. 3 is avertical central section of Fig. 1. Fig. 4. is a detached perspective of the locking device for the sliding frame. Fig. 5 is a detached perspective of one of the harrow-teeth provided with the cultivator-shovel attachment. Fig. Gis a detachedl perspective of one of the cultivators.

In the accompanying drawings, A represents an arched axle,- provided near each end with the vertical arms a,the lower ends of which terminate in the axle-arms b, upon which are mounted suitable traction-wheels. The vertical portions a of the aXleA work between side guides, b', of the guide-boxes B, upon the two outer sides of the fra-me C, and th rough the `top of these 'boxes B are threaded set-screws Drthe lower ends of which come in contact with the upper edge of the axle, and by means of which the said frame C is adapted to be verp tically adjusted upon the axle, as may be desired. Across the bottomV of the frame C are secured the bars E, to the rear faces of each of which are pivotally secured, in any convenient manner, the harrow-teeth F. The lower points of these harrow-teeth are cut back, and provided with a cutting-edgehc, while the upper ends project upward between the transverse bars of the frame G, which has a sliding movement upon the upper edge of the frame C. The longitudinal bar H of the frame G is connected by means of a rod, 1,130 the lever J, which is pivotally secured to the rear girt of the frame C, and this lever J is provided with the spring-pawl K, which engages with the notched quadrant L upon the frame C. By this arrangement of parts, when the frame lows the {harrow-teeth to drop or `lower and come in contact with the surface of the ground, while it does not rigidly hold them to such position, there being a slight play to the teeth, so that they may pass over obstructions. Vhen the frame Gis advanced or slid forward toward the front end of the frame G, the crossbars of the frame G press against the upwardly-projecting portions of the'harrow-teeth and raise them out of the ground. Vhen the frame is in its rearward extension, or so that the harrow-teeth rest upon the ground, the sliding frame is locked to such position by means of a locking-bar, M, the ends of which are provided with semicireular springs N which have a vertical movement in suitable guides, m, on the inside of the side Abars ofthe frame C. Pivotally secured to this locking-bar M is a lever, O, which is pivotally secured to one of the cross-bars of the frame G, while its rear end is received in the bifurcated end of a rocklever, l), pivotally secured to the rear girt of the frame C, while the opposite end of this lever l? is connected, by means of a link, R, to one end of the arm S, which is secured rigidly to the lever J in such manner that as the frame is brought back, so as to allow the teeth to drop, and is locked by the lever J ,the springs N are, by the connections hereinbefore named, elevated or raised in front of the front ends of the side bars of the frame G, which locks the frame with a yielding force, and thus prevents wabbling thereof, as will be readily understood.

At the rear of thedevice I secure aseat, T, which brings the ldriver within easy reach of` the operating-levers, the draft being applied at ,the opposite end by means of a pole, V, or a pair of shafts, as may be desired.

In Fig. 6 Ishow a cultivator-tooth or moldboard, "W, which is provided with a socket, h, upon its inner face, which can readily be secured upon the harrow-teeth by means of a screw, ,which will readily transform the harrow into a cultivator. Should the teeth of the harrow be so arranged that any of them would come in contact with the plants that it is desired to cultivate, such tooth (particularly in G is drawn back by means of the lever it al- ICO thelongitudinal center of the device) can readily be removed, when, by using two horses, the devicewould straddle one row, while it would readily cultivate three.

What I claim as my invention isl. The frame C, having transverse bars E, and the teeth F, p'ivoted to such bars E, and having their upper ends projecting between the bars of the sliding frame G, the spring locking device M N, the said sliding frame G, and means, substantially as described, for manipulating all the teeth simultaneously, and for locking the frame G in its rearward position with the teeth in operation, as set forth.

2. In combination with the frame C, harrow-teeth F, and sliding frame G, constructed substantially as described, the locking device M N,- adapted to be elevated and depressed simultaneously with the movements of the sliding frame by means of the levers O andP and connections with the lever operating the sliding frame, substantially as specified.

3. In combination with the frame C, teeth F, frame G, rod I', lever J, and quadrant L, the levers O I), link R, arm S, and springs N, substantially as described.

ANDREV SCHEAFFER. Witnesses:

H. S. SPRAGUE, E. SCULLY. 

